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TWO WIRE LIQUID LEVEL
FLOAT TRANSMITTER
LVR50 Series
Starts at
$
704
A single float is attached to a
stainless steel rod, which is
installed through the top of the tank.
Internal to the rod is a series of
reed switches designed to open
and close as the float changes with
the liquid level. The internal
magnets within the float will open or
⻬ Stainless Steel
Construction for a Full
Range of Chemically
Compatible Liquids
⻬ Ideal for Use in Chemicals
with a Specific Gravity
of 0.75 or Greater
⻬ Rugged Enclosure Rated
NEMA 4X (IP65)
for General Purpose
or NEMA 7 (IP65)
for Hazardous Areas
⻬ Continuously Monitor
Liquid Levels with
Proportional
4 to 20 mA Output
APPLICATION VARIABLES
Variable Yes No
General Purpose ⻬
Intrinsically Safe ⻬
Conductive ⻬
Non-conductive ⻬
∆ Conductivity ⻬
Foam ⻬
Vapors ⻬
∆ Gas Density ⻬
Contact ⻬
Clean ⻬
Liquid
Dirty ⻬
Non-coating ⻬
Ambient Pressure ⻬
Low Pressure ⻬
Medium Pressure ⻬
Coating ⻬
Non-contact ⻬
Integral Relay ⻬
Vacuum ⻬
close the reed switches in a “2-3-2
at-a-time” sequence, which enables
the transmitter to provide accurate
level indication. With every
movement of the float, either one
additional switch closes or opens
providing a 4 to 20 mA output.
SPECIFICATIONS
Range: 12.7 cm to 1.8 m (5" to 72")
Accuracy: 6.35 mm (0.25")
over span in water
Specific Gravity: 0.75 minimum
Orientation: ±30° from vertical
Supply Voltage:
LVR50-PP Series: 10 to 30 Vdc
LVR50 Series: 10 to 40 Vdc
Loop Resist.: 600Ω @ 24 Vdc
Signal Output: 4 to 20 mA, two-wire
Signal Invert: 4 to 20 or 20-4 mA
Process Temp.: -40 to 149°C
(-40 to 300°F)
Electronic Temp.: -40 to 71°C
(-40 to 160°F)
Pressure: 300 psi maximum;
-15 psig minimum
Enclosure Rating:
LVR50-PP Series: NEMA 4X (IP65)
LVR50 Series: NEMA 7 (IP65)
Installed Height:
LVR50-PP Series: 13.2 cm (5.2")
LVR50: 15.7 cm (6.2")
Encl. Material:
LVR50-PP Series: PP, UL94VO
LVR50 Series: Aluminum
Guide/Float Mat.: 316 SS
Process Mount: 2 NPT
Conduit Entrance: Single,
Classification:
LVR50-PP: General purpose
LVR50 Series: Explosion proof
CE Compliance: EN 50082-2 immunity
EN 55011 emission
K-23
1
⁄2 NPT
LVR51-PP,
$704, shown
smaller than
actual size.
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96 (3.8)
73
(2.9)
121
(4.8)
1/2
FNPT
2 NPT
1/2
FNPT
C (Indicating Length, see chart below)
117 (4.6 )
156 (6.1)
71
(2.8)
B 6.35 (0.25)
70 (2.7)
4.76
(0.1875)
Dia. 52 (2.1)
13
(0.5)
A (Overall Length Dimension, see chart below)
Aluminum Head
iSeries DPi8, $240, ordering information below.
Dimensions: mm (in)
Polypropylene Head
See page M-37 for details.
MOST POPULAR MODELS HIGHLIGHTED!
To Order (Specify Model Number)
Description for the 4 to 20 mA Level Transmitter
Model No. Price C Dimensions in m (ft) A Dimension in m (ft) Material of Head
LVR51 $734 0.3 (1) 0.396 (1.3) Aluminum
LVR51-PP 704 0.3 (1) 0.396 (1.3) Polypropylene
LVR52 878 0.6 (2) 0.701 (2.3) Aluminum
LVR52-PP 848 0.6 (2) 0.701 (2.3) Polypropylene
LVR53 1022 0.9 (3) 1.00 (3.3) Aluminum
LVR53-PP 992 0.9 (3) 1.00 (3.3) Polypropylene
LVR54 1166 1.2 (4) 1.31 (4.3) Aluminum
LVR54-PP 1136 1.2 (4) 1.31 (4.3) Polypropylene
LVR55 1310 1.5 (5) 1.62 (5.3) Aluminum
LVR55-PP 1280 1.5 (5) 1.62 (5.3) Polypropylene
LVR56 1454 1.8 (6) 1.92 (6.3) Aluminum
LVR56-PP 1424 1.8 (6) 1.92 (6.3) Polypropylene
Indicating Length Overall Length
K
Accessories
Model No. Price Description
PSU-93 $40 Unregulated 24 Vdc power supply
DPi8 240
TX4-100 35 30.5 m (100') spool of 4 conductor wire
Comes complete with operator’s manual.
Ordering Examples: LVR51, 0.3 m (1') indicating length level transmitter with aluminum head, $734.
LVR52-PP, 0.6 m (2') indicating length level transmitter with polypropylene head, $848.
1
⁄8DIN panel meter with 24 Vdc excitation, see page M-37 for details
Recommended Reference Book:
Visit omega.com/bobi for Additional Books
Chemical Engineering, Vol. 6
K-24
, CM-4229, $60.
Page 3
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